49991377 has 2 divisors, whose sum is σ = 49991378. Its totient is φ = 49991376.

The previous prime is 49991371. The next prime is 49991401. The reversal of 49991377 is 77319994.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28313041 + 21678336 = 5321^2 + 4656^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49991377 is a prime.

It is a super-2 number, since 2×49991377² = 4998275548712258, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 49991377.

It is not a weakly prime, because it can be changed into another prime (49991371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24995688 + 24995689.

It is an arithmetic number, because the mean of its divisors is an integer number (24995689).

Almost surely, 2^49991377 is an apocalyptic number.

It is an amenable number.

49991377 is a deficient number, since it is larger than the sum of its proper divisors (1).

49991377 is an equidigital number, since it uses as much as digits as its factorization.

49991377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 428652, while the sum is 49.

The square root of 49991377 is about 7070.4580473969. The cubic root of 49991377 is about 368.3819703774.

The spelling of 49991377 in words is "forty-nine million, nine hundred ninety-one thousand, three hundred seventy-seven".